<template>
  <div class="singer" ref="singer">
      <list-view @select="selectSinger" :data="singers" ref="list">
      </list-view>
      <router-view></router-view>
  </div>
</template>

<script type="text/ecmascript-6">
    import {getSingerList} from 'api/singer'
    import {ERR_OK} from 'api/config'
    import Singer from 'common/js/singer'
    import ListView from 'base/listview/listview'
    import {mapMutations} from 'vuex'
    import {playlistMixin} from 'common/js/mixin'

    const HOT_NAME = '热门'
    const HOT_SINGER_LEN = 10

export default {
    mixins: [playlistMixin],
    data() {
        return {
            singers: []
        }
    },
    created() {
    this._getSingerList()
    },
    methods: {
        handlePlaylist(playlist) {
            const bottom = playlist.length > 0 ? '60px' : ''
            this.$refs.singer.style.bottom = bottom
            this.$refs.list.refresh()
      },
        selectSinger(singer) {
            this.$router.push({
                path: `/singer/${singer.id}`
            })
            this.setSinger(singer)
        },
        _getSingerList() {
            getSingerList().then((res) => {
                if (res.code === ERR_OK) {
                    this.singers = this._normalizeSinger(res.data.list)
                }
            })
        },
        _normalizeSinger(list) {
            let map ={
                hot: {
                    title: HOT_NAME,
                    items: []
                }
            }
            list.forEach((item, index) => {
                if(index < HOT_SINGER_LEN) {
                    map.hot.items.push(new Singer({
                        id: item.Fsinger_mid,
                        name: item.Fsinger_name
                    }))
                }
                const key = item.Findex
                if(!map[key]) {
                    map[key] = {
                        title: key,
                        items: []
                    }
                }
                map[key].items.push(new Singer({
                    id: item.Fsinger_mid,
                    name: item.Fsinger_name
                }))
            })
            let hot = []
            let ret = []
            for(let key in map) {
              let val = map[key]
              if(val.title.match(/[a-zA-Z]/)) {
                ret.push(val)
              }else if(val.title  === HOT_NAME)  {
                hot.push(val)
              }
            }
            ret.sort((a, b) => {
                return a.title.charCodeAt(0) - b.title.charCodeAt(0)
            })
            return hot.concat(ret)
        },
        ...mapMutations({
            setSinger: 'SET_SINGER'
        })

    },
    components: {
        ListView
    }
}


</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
    .singer
        position: fixed
        top: 88px
        bottom: 0
        width: 100%
</style>

